pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
f,m,f-m,6,0.8336930832963215,,$blah
f,n,f-n,-45,0.44338308606070165,0.6856802654812854,$blah
f,o,f-o,-85,,,$null
f,p,f-p,64,,,$null
f,q,f-q,-83,0.5542077884611291,0.21595135191867476,$null
f,r,f-r,52,,,$null
f,s,f-s,69,0.866447888506801,0.7899846642347539,$null
f,t,f-t,-56,0.26536750832497336,0.5260855265978671,$blah
f,u,f-u,99,0.36203897381751204,,$blah
f,v,f-v,17,0.6433406842054887,,$blah
f,w,f-w,82,,,$blah
f,x,f-x,59,0.6330767243010155,0.3809043988185208,$blah
f,y,f-y,29,0.09917846167904198,0.6547129575231422,$null
f,z,f-z,10,0.4515549159652815,0.3987301842569533,$null